Fix cli beta (#100)

* Fix cli (fix #65)

* Reorganize files

* Change help messages

* Add --no-run-parity

* Small tweaks

* Util->utils

* Fix bug run parity

* Fix bug no-run-parity

electron/cli/helpMessage.js

@@ -0,0 +1,17 @@
+module.exports = `
+Parity UI.
+Copyright 2015, 2016, 2017, 2018 Parity Technologies (UK) Ltd.
+
+Operating Options:
+    --no-run-parity
+        Parity UI will not attempt to run the locally installed parity.
+
+    --ui-dev
+        Parity UI will load http://localhost:3000. WARNING: Only use this is you plan on developing on Parity UI.
+
+    --ws-interface=[IP]
+        Specify the hostname portion of the WebSockets server Parity UI will connect to. IP should be an interface's IP address. (default: 127.0.0.1)
+
+    --ws-port=[PORT]
+        Specify the port portion of the WebSockets server Parity UI will connect to. (default: 8546)
+`;

electron/cli/index.js

@@ -17,45 +17,23 @@
 // eslint-disable-next-line
 const dynamicRequire = typeof __non_webpack_require__ === 'undefined' ? require : __non_webpack_require__; // Dynamic require https://github.com/yargs/yargs/issues/781
 
-const { app } = require('electron');
-const fs = require('fs');
 const omit = require('lodash/omit');
-const { spawn } = require('child_process');
 
 const argv = dynamicRequire('yargs').argv;
-const parityPath = require('../util/parityPath');
+const helpMessage = require('./helpMessage');
 const { version } = require('../../package.json');
 
 let parityArgv = null; // Args to pass to `parity` command
 
-/**
- * Show output of `parity` command with args. The args are supposed to make
- * parity stop, so that the output can be immediately shown on the terminal.
- *
- * @param {Array<String>} args - The arguments to pass to `parity`.
- */
-const showParityOutput = args => {
-  if (fs.existsSync(parityPath())) {
-    const parityHelp = spawn(parityPath(), args);
-
-    parityHelp.stdout.on('data', data => console.log(data.toString()));
-    parityHelp.on('close', () => app.quit());
-  } else {
-    console.log('Please run Parity UI once to install Parity Ethereum Client. This help message will then show all available commands.');
-    app.quit();
-  }
-
-  return false;
-};
-
 module.exports = () => {
   if (argv.help || argv.h) {
-    return showParityOutput(['--help']);
+    console.log(helpMessage);
+    return false;
   }
 
   if (argv.version || argv.v) {
     console.log(`Parity UI version ${version}.`);
-    return showParityOutput(['--version']);
+    return false;
   }
 
   // Used cached value if it exists
@@ -64,11 +42,23 @@ module.exports = () => {
   }
 
   // Args to pass to `parity` command
-  parityArgv = omit(argv, '_', '$0');
-
-  // Delete all keys starting with --ui* from parityArgv.
-  // They will be handled directly by the UI.
-  Object.keys(parityArgv).forEach(key => key.startsWith('ui') && delete parityArgv[key]);
+  parityArgv = omit(argv, '_', '$0', 'help', 'version');
+
+  // Sanitize args to be easily used by parity
+  Object.keys(parityArgv).forEach(key => {
+    // Delete all keys starting with --ui* from parityArgv.
+    // They will be handled directly by the UI.
+    if (key.startsWith('ui')) {
+      delete parityArgv[key];
+    }
+
+    // yargs create camelCase keys for each arg, e.g. "--ws-origins all" will
+    // create { wsOrigins: 'all' }. For parity, we remove all those that have
+    // a capital letter
+    if (/[A-Z]/.test(key)) {
+      delete parityArgv[key];
+    }
+  });
 
   return [argv, parityArgv];
 };

electron/index.js

@@ -20,34 +20,36 @@ const url = require('url');
 
 const addMenu = require('./menu');
 const cli = require('./cli');
-const fetchParity = require('./fetchParity');
+const doesParityExist = require('./operations/doesParityExist');
+const fetchParity = require('./operations/fetchParity');
+const handleError = require('./operations/handleError');
 const messages = require('./messages');
-const { killParity } = require('./messages/runParity');
+const { killParity } = require('./operations/runParity');
 
 const { app, BrowserWindow, ipcMain, session } = electron;
 let mainWindow;
 
 // Get arguments from cli
-const [argv] = cli();
-
-// Will send these variables to renderers via IPC
-global.dirName = __dirname;
-global.wsInterface = argv['ws-interface'];
-global.wsPort = argv['ws-port'];
+const argv = cli()[0];
 
 function createWindow () {
   // If cli() returns false, then it means that the arguments are stopping the
   // app (e.g. --help or --version). We don't do anything more in this case.
-  if (!argv) { return; }
+  if (!argv) { return app.quit(); }
+
+  // Will send these variables to renderers via IPC
+  global.dirName = __dirname;
+  global.wsInterface = argv['ws-interface'];
+  global.wsPort = argv['ws-port'];
 
   mainWindow = new BrowserWindow({
     height: 800,
     width: 1200
   });
 
-  // Fetch parity if not yet installed
-  fetchParity(mainWindow)
-    .then(() => { global.parityInstalled = true; });
+  doesParityExist()
+    .catch(() => fetchParity(mainWindow)) // Install parity if not present
+    .catch(handleError); // Errors should be handled before, this is really just in case
 
   if (argv['ui-dev'] === true) {
     // Opens http://127.0.0.1:3000 in --ui-dev mode

electron/messages/index.js

@@ -14,8 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-const { runParity } = require('./runParity');
-const signerNewToken = require('./signerNewToken');
+const { runParity } = require('../operations/runParity');
+const signerNewToken = require('../operations/signerNewToken');
 
 /**
  * Handle all asynchronous messages from renderer to main.

electron/operations/doesParityExist.js

@@ -0,0 +1,25 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+const fs = require('fs');
+const util = require('util');
+
+const parityPath = require('../utils/parityPath');
+
+const fsExists = util.promisify(fs.stat);
+
+module.exports = () => fsExists(parityPath())
+  .then(() => { global.isParityInstalled = true; });

electron/fetchParity/index.js → electron/operations/fetchParity.js

@@ -14,16 +14,18 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-const { app, dialog, webContents } = require('electron');
+const { app } = require('electron');
 const axios = require('axios');
 const { download } = require('electron-dl');
 const fs = require('fs');
 const util = require('util');
 
-const { parity: { channel } } = require('../../package.json');
-const parityPath = require('../util/parityPath');
+const handleError = require('./handleError');
+const {
+  parity: { channel }
+} = require('../../package.json');
+const parityPath = require('../utils/parityPath');
 
-const fsExists = util.promisify(fs.stat);
 const fsChmod = util.promisify(fs.chmod);
 
 const getArch = () => {
@@ -57,35 +59,25 @@ const getOs = () => {
   }
 };
 
-module.exports = (mainWindow) => {
-  // Download parity if not exist in userData
-  // Fetching from https://vanity-service.parity.io/parity-binaries
-  return fsExists(parityPath())
-    .catch(() => axios.get(`https://vanity-service.parity.io/parity-binaries?version=${channel}&os=${getOs()}&architecture=${getArch()}`)
-      .then((response) => response.data[0].files.find(({ name }) => name === 'parity' || name === 'parity.exe'))
-      .then(({ downloadUrl }) => download(
-        mainWindow,
-        downloadUrl,
-        {
-          directory: app.getPath('userData'),
-          onProgress: (progress) => webContents.fromId(mainWindow.id).send('parity-download-progress', progress)
-        }
-      ))
+// Fetch parity from https://vanity-service.parity.io/parity-binaries
+module.exports = mainWindow =>
+  axios
+    .get(
+      `https://vanity-service.parity.io/parity-binaries?version=${channel}&os=${getOs()}&architecture=${getArch()}`
+    )
+    .then(response =>
+      response.data[0].files.find(
+        ({ name }) => name === 'parity' || name === 'parity.exe'
+      )
+    )
+    .then(({ downloadUrl }) =>
+      download(mainWindow, downloadUrl, {
+        directory: app.getPath('userData'),
+        onProgress: progress =>
+          mainWindow.webContents.send('parity-download-progress', progress) // Notify the renderers
+      })
     )
     .then(() => fsChmod(parityPath(), '755'))
-    .then(() => parityPath())
-    .catch((err) => {
-      console.error(err);
-      dialog.showMessageBox({
-        buttons: ['OK'],
-        detail: `Please attach the following debugging info:
-OS: ${process.platform}
-Arch: ${process.arch}
-Channel: ${channel}
-Error: ${err.message}`,
-        message: 'An error occured while downloading parity. Please file an issue at https://github.com/parity-js/shell/issues.',
-        title: 'Parity Error',
-        type: 'error'
-      }, () => app.exit(1));
+    .catch(err => {
+      handleError(err, 'An error occured while fetching parity.');
     });
-};

electron/operations/handleError.js

@@ -0,0 +1,44 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+const { app, dialog } = require('electron');
+
+const {
+  parity: { channel }
+} = require('../../package.json');
+const parityPath = require('../utils/parityPath');
+
+module.exports = (err, message = 'An error occurred.') => {
+  console.error(err);
+  dialog.showMessageBox(
+    {
+      buttons: ['Quit', 'Cancel'],
+      detail: `Please attach the following debugging info:
+OS: ${process.platform}
+Arch: ${process.arch}
+Channel: ${channel}
+Error: ${err.message}
+Please also attach the contents of the following file:
+${parityPath()}.log
+
+Please quit the app and retry again. If the error message persists, please file an issue at https://github.com/parity-js/shell/issues.`,
+      message: `${message}`,
+      title: 'Parity Error',
+      type: 'error'
+    },
+    (buttonIndex) => { if (buttonIndex === 0) { app.exit(1); } }
+  );
+};